2x B&C 18SW115 dual horn subwoofer

I'm working on my 1st PA subwoofer project which is based on Void Stasys X-Air design.
The plan is to use two B&C 18SW115 woofers instead of the original Void drivers.

Subwoofer design overview

View attachment 903008

That's a series tuned BP8 that I THINK can be modeled in HR.

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